.flex{
	display: flex;
	flex-direction: row; 
	justify-content: flex-start;
	align-items: center; 
}
.p_txt{ 
	overflow: hidden;/*超出部分隐藏*/
	white-space: nowrap;/*不换行*/
	text-overflow:ellipsis;/*超出部分文字以...显示*/
}